Valve-gear.



- G. F. RICHART.

VALVE GEAR.

APPLlcATloN mio Aus.7.1913.

Patented 111110 1, 1915.

2 SHEETS-SHEET 1.

G. F. RICHART.

VALVE GEAR.

. APPLICATION FILED AuGJ. 1913.

Patented June 1, 1915.

- 2 SHEETS-SHEET 2.

amen/47o@ WMM/wom:

UNITED STATES rATENT ermee.

GEORGE r. nicmar, lor GRAND JUNo'roN, oonojano.

Patented J une 1, 1915.

which is pivotally mounted at g upon the VALVE-GEAR 1 ,141,411h'Specification of Letters Ptut.

` Application filed August 7, 1918. Serial N o. 788,518.

To all whom it may concern Beit known that I, GEORGE F. RICHART,

a citizen of the United States of America, residing at Grand Junction,in the county of Mesa and Statu of-Colorado, have '1nvented certain newand useful Im rove- Iments in Valve-Gears, of which the ollow- 4 ing isa specification, reference being had to the accompanying drawings. h

This invention relates to improvements in valve-gears; and an o bject ofthis invention is to simplify the construction of valvegears by doingaway with many of the parts ofvalve-gears now in use.

Another object of this invention is to provide a valve-gear in which allthe parts shall be visible and so positioned as to be easily oiled andaccessible for the making of repairs or the replacing of parts.

A third object of this invention is to provide. a valve-gear in whichthe-lead will be increased as the reverse-lever is moved to- Ward thecenter of its quadrant.

11. fourth object of -this invention is to provide a valve-gear in whichthe setting of the valve shall be extremely simple.

In the drawings illustrating the principle of this invention and thebest mode now known to me of applying that principle, Figure 1 is a sideelevation partly in section of an engine structure equipped with my newvalve-gear, so much of the latter structure bein shown as is necessaryto illustrate clear this invention; and Figs. 2, 3, and 1e-are sectionson the lines A-A, B-B, CC, respectively, of Fig. 1. -The drive-wheel ais shown as resting upon the rail 'b and as connected through thecrank-pin c and the mainor connecting rod d with the crosshead e, towhich is suitably fastened the outer end of the pistonrod f the innerend of which is connected with the piston g that reciprocates in theusual way in the steam-cylinder h. A steamchest z' surmounts thecylinder h; and in this Steam-chest 1I there travels back and 'forth avalve j the lower end of which controls the flow of steam through thesteamassages lc and the upper end of which is astened to a valve-rod m.'

The lower end off the eccentric arm n is mounted free to ,swing uponVthe crankpin c and its upper end is connected by the eccentric rod owith the u per end of a swinging arm the lead-an -lap lever p, i

guide-yoke fr which connects the crank-ends of the guide-bars s, t.

Upon thev upper guide-bar s there is mounted a box u in which isjournaled a valve-controlling device o the upper end of which isconnected with the outer end of the valve-rod lmJ and the lower end ofwhich is formed with a trunnion v which carries a slide-block w. Uponthis slide-block w there is slidably mounted a link vformed near itscenter with a link-saddle By the lower radius-rod y the bottom of thelink if; connected to the lower end of the lead-and-lap lever p, whilethe top of the link m is connected by the upper radius rod e to thelower end of a swinging arm known as a motion-arm 2 the upper end ofwhich is journaled in the motion-arm .box suitably mounted upon the topguidear s.

In a suitable-journal-box 4 upon the upper guide-bar s there isjournaled a tumbling-shaft 5 near one end of which there is fastened thelower end of a tumblingshaft arm 6 the upper end of which is connectedby the reach-rod 7 with the reverselever 8 the upper end of which may belocked temporarily by the latch 9 with the toothed sector or quadrant10.

The tumbling-shaft arm 6 is arranged in direct line with thcreverse-clever 8. Upon the other end of the tumbling-shaft 5 there ismounted a rocker-arm 11 which is by means of the link-lifting bar 12connected with the link-saddle w', so that the link is suspended outsideof the guides by this linklifter 12.

The throw of the link :v is controlled by the lower and upperradius-rods y, e, which the link by the upper radius-rod e.

The setting of thisvalve-gear is very simple as the lead is given byadvanced angularity. of the radius-rods y and z.

The link is raised and lowered through 11" as hereinbefore described,with the top of L a l the tumbling-shaft arms 6 and 1l and thelink-lifter 1,2 by manipulating the reverse lever 8.

The construction of this valve-gear is simple; the crosshead a and themain rod d are not connected with the valve-gear. All rods aresubstantially straight and are connected by hardened pins and bushings.

This valve-gear can be used on slidevalves or piston valves, as desired,and with inside or outside admission as may be deemed more desirable.

l claim:

1. A valve-gear comprising a link; a pair of swinging arms linkedthereto; and an eccentric-rod which controls one of said arms.

2. A valve-gear comprising a link; a pair of swinging arms between whichsaid link is interposed and to which the same is linked; and aneccentric-rod which controls one of said arms.

3. A valve-gear comprising a link; a pair of swinging arms linkedthereto and together; and an eccentric-rod which controls one of saidarms.

4. A valve-gear comprising a link ;-a leadand-lap lever; a motion-arm; areverse lever which controls said link; radius-rods one of whichconnects said link and motion-arm and the other of which connects saidlink .and lever; and an eccentric-rod connected to said lever.

5. A valve-gear comprising a link; a vulve-rod; a rocking support whichcarries said link and is vconnected with said valveirod; a pair ofswinging arms linked to said link; and an eccentric-rod connected tooneof said arms.

6. A valve-gear comprising a link; a t'w' if, A. tric-rod which controlsone of said arms;

of swinging arms linked thereto; an e and mechanism for raising saidlink.

7. A valve-gear compnsing an eccentncrod; a lever which is connectedthereto and receives a swinging movement therefrom; a motion-arm whichis controlled androcked by said lever; and a link connected wlth saidlever and motlon-arm.

8. A valve-gear comprising an eccentricrod; a lever which isconnectedthereto and receives a swinging movement therefrom; a motion-arm whichis controlled and rocked by said lever; a link connected with'said leverand motion-arm; a rocking support v for said link; and a valve-rodconnected with said support.

9. A valve-gear comprising an eccentricrod; a lever which is connectedthereto and receives a swinging movement therefrom;

a motion-arm which is controlled and rocked by said lever; a 'linkconnected with said lever and motion-arm; a valve-rod driven by saidlink; and means for raising said limff- 5 Junction, Colorado, l

